GRAVITY SURVEY IN ROSS ISLAND, ANTARCTICA

• Main Authors: ミウラ サトシ, カミヌマ カツタダ, コヤマ エツロウ, Satoshi MIURA, Katsutada KAMINUMA, Etsuro KOYAMA
• Format: Report
• Language: English
• Published: Faculty of Science, Tohoku University 1987
• Subjects: Ross Island; Mount Erebus; Antarc*; Antarctica
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2528; http://id.nii.ac.jp/1291/00002528/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2528&item_no=1&attribute_id=18&file_no=1

Gravity surveys have been carried out in Ross Island every summer since 1982/83 in order to investigate the subsurface structure of the active volcano in Antarctica, Mount Erebus. The Bouguer anomaly has been calculated at each station. The pattern of anomaly distribution on this island can be summarized that the anomaly is high in the whole island except the western and southwestern coasts, where anomalies are about zero or negative, and that a higher anomaly exists in the summit area of Mount Erebus. The structure of Mount Erebus might be classified as a type similar to the Kilauea Volcano of Hawaii Island or the Osima Volcano of Japan.